Just wanted to plug my favourite author Ken McClure, who writes well researched and very readable science/medical thrillers set in the UK. I was ecstatic when I found most of his back catalogue as e-books for under £4 on Amazon.
His work is similar to Robin Cook and Michael Crichton and I highly recommend giving him a try, don't be put off by the cover art, it may be cheap but the books are very good.
http://www.amazon.co.uk/FENTONS-WINT...3761856&sr=1-7